1. (noun) a chronic progressive disease characterized by chronic fatigue and muscular weakness (especially in the face and neck); caused by a deficiency of acetylcholine at the neuromuscular junctions

• myasthenia gravis

1. (noun) a chronic progressive disease characterized by chronic fatigue and muscular weakness (especially in the face and neck); caused by a deficiency of acetylcholine at the neuromuscular junctions

• autoimmune disease
• autoimmune disorder
• disease of the neuromuscular junction

2. (noun) any muscular weakness

• physical condition
• physiological condition
• physiological state